Graco EVR Electronic Variable Ratio Precision Dispensing System

About the Graco EVR Electric Variable Ratio Two-Part Meter Mix System

Graco Electric Variable Ratio (EVR™) Metering System is designed for high-performance mixing, metering, and dispensing of two-component (2K) materials, including epoxies, acrylics, silicones, urethanes, and thermal interface materials (TIMs). With on-the-fly ratio adjustments, this system eliminates the need for multiple pumps or hardware swaps when dealing with material variations. The EVR's base purge feature reduces waste while preventing cured material buildup, ensuring uninterrupted production. Whether working with bulk unloaders, supply pumps, or day tanks, this high-flow system efficiently handles ratio ranges from 1:1 to 5:1 or 2:1 to 10:1, while dispensing up to 6,400 cc per minute.

Features and Benefits of Graco EVR Systems

• Flexible Ratio Dispensing: Easily adjust dispense ratios between 1:1 to 5:1 or 2:1 to 10:1.
  
• User-Friendly Interface: Quickly monitor and modify system performance.
  
• Durable Z-Pumps: Withstand abrasive adhesives and sealants for long-term reliability.
  
• Powerful, Maintenance-Free Motors: Provide smooth, precise, and powerful operation.
  
• Dual Independent Motors: Each pump has its own electric motor, doubling the horsepower for high-viscosity material processing.
  
• Seamless Factory Integration: Connect via discrete or fieldbus ports to a PLC system for process control and data reporting.

Specifications

• Model: EVR Metering System
  
• Ratio Range: 1:1 – 5:1 / 2:1 – 10:1
  
• Shot Size Range: 0.3 cc to Continuous
  
• Maximum Flow Rate: 2 to 6400 cc/min (depending on material viscosity)
  
• Viscosity Range: 20 to 1,000,000 cps
  
• Power Requirements: 240V and 480V
  
• Fluid Inlet Size: 3/4" NPT (f)
  
• Fluid Outlet Size: 1/2" NPT (f)
  
• Maximum Fluid Pressure: 3,500 psi (24 MPa, 241 bar)
  
• Minimum Inlet Fluid Pressure: 50 psi (0.35 MPa, 3.5 bar)
  
• Maximum Fluid Temperature: 120°F (50°C)
  
• Wetted Parts: Stainless steel, zinc-plated carbon steel, brass, tungsten carbide, chrome, fluoroelastomer, PTFE, ultra-high molecular weight polyethylene, silicon nitride
  
• Weight: 240V = 425 lbs, 480V = 680 lbs